fix: revert to npm overrides format (not applied by pnpm)

The original working state at a4e1321 used npm's 'overrides' format
which pnpm ignores. The pnpm.overrides were forcing versions that
broke cursor functionality. Reverting to match original behavior.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: yoen-velt

package.json

@@ -39,21 +39,13 @@
     "packages/*"
   ],
   "packageManager": "[email protected]",
-  "pnpm": {
-    "overrides": {
-      "@veltdev/crdt": "4.5.8",
-      "@veltdev/crdt-react": "4.5.8",
-      "@veltdev/tiptap-crdt-react": "^4.5.9-beta.2",
-      "@veltdev/blocknote-crdt-react": "4.5.0-beta.3",
-      "@veltdev/codemirror-crdt-react": "4.5.8",
-      "@veltdev/reactflow-crdt": "4.5.8",
-      "@veltdev/react": "^4.6.10",
-      "yjs": "13.6.18",
-      "y-prosemirror": "1.2.12",
-      "lib0": "0.2.98",
-      "@codemirror/state": "6.5.2",
-      "@codemirror/view": "6.39.4",
-      "y-codemirror.next": "0.3.5"
-    }
+  "overrides": {
+    "@veltdev/crdt": "4.5.8",
+    "@veltdev/crdt-react": "4.5.8",
+    "@veltdev/tiptap-crdt-react": "^4.5.9-beta.2",
+    "@veltdev/blocknote-crdt-react": "4.5.0-beta.3",
+    "@veltdev/codemirror-crdt-react": "4.5.8",
+    "@veltdev/reactflow-crdt": "4.5.8",
+    "@veltdev/react": "^4.6.10"
   }
 }